RVskin installation error

Updating rvskin database...
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DBI connect('rvadmin_news:localhost:3306','rvadmin_public',...) failed: Access denied for user 'rvadmin_public'@'localhost' (using password: YES) at /root/rvadmin/real_auto_rvskin.pl line 709

Database connection failed, You need to create it manually in rvadmin Skin Manager after installation is completed.

-------- Database connection testing command --------
perl -e "use DBI;print \"\n\";unless ( DBI->connect('DBI:mysql:rvadmin_news:localhost:3306','rvadmin_public','2412935') ){print \"Connection fail\n\";exit;}print \"Connection OK\n\";"
----- Above is 1 line command. It must show Connection OK. -----

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run the perl script perl -e "use DBI;print \"\n\";unless ( DBI->connect('DBI:mysql:rvadmin_news:localhost:3306','rvadmin_public','2412935') by replacing current passwd